Re: Meraki switch to Cisco IOS connectivity via FO to Ethernet converter
I don't see why it wouldn't work, if the FO converter adheres to the standards.
Make sure all wavelengths and speeds are compatible. I.e. use a multimode SFP in the Meraki switch in combination with a multimode FO converter if the fibers are multimode cabling. Or similarly single mode for everything. And 1G or 10G on both ends.
Also ideally make sure your patch cables are of the same type or better, not all fibers are created alike (Multimode options: OM1, OM2, OM3, OM4 - Single Mode options: OS1, OS2).
If you have problems don't expect Meraki support to be able to help much if there are issues though ;).